{"id":3233,"date":"2026-09-12T21:26:00","date_gmt":"2026-09-12T21:26:00","guid":{"rendered":"https:\/\/lbajiele.com\/blog\/how-do-you-calculate-voltage-drop-across-a-resistor\/"},"modified":"2026-09-15T07:34:49","modified_gmt":"2026-09-15T07:34:49","slug":"how-do-you-calculate-voltage-drop-across-a-resistor","status":"publish","type":"post","link":"https:\/\/lbajiele.com\/vi\/blog\/how-do-you-calculate-voltage-drop-across-a-resistor\/","title":{"rendered":"L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u00ednh \u0111\u1ed9 s\u1ee5t \u00e1p tr\u00ean m\u1ed9t \u0111i\u1ec7n tr\u1edf?"},"content":{"rendered":"<p><strong>T\u00ednh \u0111\u1ed9 s\u1ee5t \u00e1p tr\u00ean m\u1ed9t \u0111i\u1ec7n tr\u1edf b\u1eb1ng \u0111\u1ecbnh lu\u1eadt Ohm: V = I \u00d7 R.<\/strong> S\u1eed d\u1ee5ng v\u00f4n cho V, ampe cho I v\u00e0 \u00f4m cho R. Trong m\u1ea1ch n\u1ed1i ti\u1ebfp, \u0111\u1ed9 s\u1ee5t \u00e1p c\u1ee7a m\u1ed7i \u0111i\u1ec7n tr\u1edf t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi \u0111i\u1ec7n tr\u1edf c\u1ee7a n\u00f3; trong m\u1ea1ch song song, m\u1ed7i nh\u00e1nh th\u00f4ng th\u01b0\u1eddng c\u00f3 c\u00f9ng m\u1ed9t \u0111i\u1ec7n \u00e1p \u0111\u1eb7t v\u00e0o.<\/p>\n\n<div class=\"lbaji-key-takeaways\"><h2>Nh\u1eefng \u0111i\u1ec3m ch\u00ednh<\/h2><ul><li>X\u00e1c \u0111\u1ecbnh r\u00f5 nhi\u1ec7m v\u1ee5 c\u1ee7a h\u1ec7 th\u1ed1ng tr\u01b0\u1edbc khi l\u1ef1a ch\u1ecdn, \u0111\u1ea5u n\u1ed1i ho\u1eb7c th\u1eed nghi\u1ec7m thi\u1ebft b\u1ecb.<\/li><li>Ph\u1ed1i h\u1ee3p thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7, d\u00e2y d\u1eabn, v\u1ecf b\u1ecdc v\u00e0 quy tr\u00ecnh v\u1eadn h\u00e0nh th\u00e0nh m\u1ed9t h\u1ec7 th\u1ed1ng duy nh\u1ea5t.<\/li><li>S\u1eed d\u1ee5ng nh\u00e2n s\u1ef1 \u0111i\u1ec7n c\u00f3 chuy\u00ean m\u00f4n v\u00e0 ti\u00eau chu\u1ea9n d\u1ef1 \u00e1n hi\u1ec7n h\u00e0nh \u0111\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh cu\u1ed1i c\u00f9ng.<\/li><\/ul><\/div>\n\n<figure class=\"wp-block-image size-full lbaji-product-image\"><img decoding=\"async\" src=\"https:\/\/lbajiele.com\/wp-content\/uploads\/2026\/09\/how-do-you-calculate-voltage-drop-across-a-resistor-body-022.png\" alt=\"LBAJI product equipment illustrating how do you calculate voltage drop across a resistor\" loading=\"lazy\"\/><figcaption>H\u00ecnh \u1ea3nh d\u1ef1a tr\u00ean s\u1ea3n ph\u1ea9m LBAJI v\u1ec1 c\u00e1ch t\u00ednh \u0111i\u1ec7n \u00e1p gi\u1ea3m qua m\u1ed9t \u0111i\u1ec7n tr\u1edf; c\u1ea5u h\u00ecnh cu\u1ed1i c\u00f9ng s\u1ebd kh\u00e1c nhau t\u00f9y theo d\u1ef1 \u00e1n.<\/figcaption><\/figure>\n\n<h2>C\u00f4ng th\u1ee9c t\u00ednh s\u1ee5t \u00e1p<\/h2><p>K\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm hi\u1ec7n t\u1ea1i c\u1ee7a Hoa K\u1ef3 li\u00ean t\u1ee5c \u0111\u1ec1 c\u1eadp \u0111\u1ebfn vi\u1ec7c Hi\u1ec3u s\u00e2u v\u1ec1 \u0110\u1ecbnh lu\u1eadt Ohm. B\u00e0i vi\u1ebft n\u00e0y gi\u1eef m\u1ed1i quan t\u00e2m \u0111\u00f3 trong b\u1ed1i c\u1ea3nh k\u1ef9 thu\u1eadt c\u00f4ng nghi\u1ec7p v\u00e0 mua s\u1eafm. B\u1eaft \u0111\u1ea7u b\u1eb1ng vi\u1ec7c x\u00e1c \u0111\u1ecbnh b\u1ed1i c\u1ea3nh chi ph\u1ed1i. C\u00e1c thu\u1eadt ng\u1eef \u0111i\u1ec7n c\u00f3 th\u1ec3 c\u00f3 c\u00e1c ranh gi\u1edbi kh\u00e1c nhau trong ng\u00e0nh \u0111i\u1ec7n t\u1eed, h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n t\u00f2a nh\u00e0, h\u1ec7 th\u1ed1ng c\u00f4ng nghi\u1ec7p v\u00e0 m\u1ea1ng l\u01b0\u1edbi ti\u1ec7n \u00edch. N\u00eau r\u00f5 d\u1ea1ng s\u00f3ng, \u0111i\u1ec7n \u00e1p danh \u0111\u1ecbnh, b\u1ed1 tr\u00ed pha, \u0111i\u1ec3m tham chi\u1ebfu v\u00e0 quy chu\u1ea9n ho\u1eb7c ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng tr\u01b0\u1edbc khi chuy\u1ec3n m\u1ed9t l\u1eddi gi\u1ea3i th\u00edch chung th\u00e0nh m\u1ed9t quy\u1ebft \u0111\u1ecbnh thi\u1ebft k\u1ebf.<\/p><p>\u0110\u1ec3 t\u00ednh \u0111\u1ed9 s\u1ee5t \u00e1p tr\u00ean m\u1ed9t \u0111i\u1ec7n tr\u1edf, m\u1ee5c \u0111\u00edch th\u1ef1c t\u1ebf c\u1ee7a b\u01b0\u1edbc n\u00e0y l\u00e0 v\u00ec c\u00e1c k\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm hi\u1ec7n t\u1ea1i \u1edf Hoa K\u1ef3 li\u00ean t\u1ee5c \u0111\u1ec1 c\u1eadp \u0111\u1ebfn vi\u1ec7c hi\u1ec3u s\u00e2u s\u1eafc \u0111\u1ecbnh lu\u1eadt Ohm. B\u00e0i vi\u1ebft n\u00e0y gi\u1eef m\u1ed1i quan t\u00e2m \u0111\u00f3 trong b\u1ed1i c\u1ea3nh k\u1ef9 thu\u1eadt c\u00f4ng nghi\u1ec7p v\u00e0 mua s\u1eafm. S\u1eed d\u1ee5ng \u0111\u1ed3ng th\u1eddi b\u1ea3n v\u1ebd d\u1ef1 \u00e1n, nh\u00e3n m\u00e1c thi\u1ebft b\u1ecb, h\u01b0\u1edbng d\u1eabn c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ti\u00eau chu\u1ea9n qu\u1ea3n l\u00fd; kh\u00f4ng c\u00f3 m\u1ed9t th\u00f4ng s\u1ed1 catalogue \u0111\u01a1n l\u1ebb n\u00e0o m\u00f4 t\u1ea3 to\u00e0n b\u1ed9 ch\u1ebf \u0111\u1ed9 l\u00e0m vi\u1ec7c. Khi th\u00f4ng tin m\u00e2u thu\u1eabn, h\u00e3y d\u1eebng l\u1ea1i v\u00e0 gi\u1ea3i quy\u1ebft s\u1ef1 b\u1ea5t nh\u1ea5t tr\u01b0\u1edbc khi thay \u0111\u1ed5i c\u00e0i \u0111\u1eb7t, d\u00e2y d\u1eabn ho\u1eb7c thi\u1ebft b\u1ecb. M\u1ed9t qu\u00e1 tr\u00ecnh xem x\u00e9t k\u1ef7 lu\u1eadt gi\u00fap t\u00e1ch bi\u1ec7t c\u00e1c s\u1ef1 th\u1eadt \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh kh\u1ecfi c\u00e1c gi\u1ea3 \u0111\u1ecbnh. \u0110\u00e1nh d\u1ea5u t\u1eebng th\u00f4ng tin \u0111\u1ea7u v\u00e0o l\u00e0 \u0111\u00e3 \u0111o \u0111\u1ea1c, \u0111\u00e3 t\u00ednh to\u00e1n, \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh ho\u1eb7c v\u1eabn ch\u01b0a r\u00f5. Sau \u0111\u00f3, x\u00e1c \u0111\u1ecbnh ti\u00eau ch\u00ed ch\u1ea5p nh\u1eadn v\u00e0 ng\u01b0\u1eddi c\u00f3 th\u1ea9m quy\u1ec1n ph\u00ea duy\u1ec7t. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra m\u1ed9t h\u1ed3 s\u01a1 h\u1eefu \u00edch cho vi\u1ec7c mua s\u1eafm, ch\u1ea1y th\u1eed v\u00e0 b\u1ea3o tr\u00ec sau n\u00e0y, \u0111\u1ed3ng th\u1eddi ng\u0103n ch\u1eb7n m\u1ed9t quy\u1ebft \u0111\u1ecbnh hi\u1ec7n tr\u01b0\u1eddng mang t\u00ednh t\u1ea1m th\u1eddi tr\u1edf th\u00e0nh c\u1ea5u h\u00ecnh v\u0129nh vi\u1ec5n kh\u00f4ng c\u00f3 t\u00e0i li\u1ec7u ghi nh\u1eadn.<\/p>\n\n<h2>Ch\u1ecdn D\u00f2ng \u0111i\u1ec7n v\u00e0 \u0110i\u1ec7n tr\u1edf \u0110\u00fang<\/h2><p>K\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm hi\u1ec7n t\u1ea1i c\u1ee7a Hoa K\u1ef3 li\u00ean t\u1ee5c \u0111\u1ec1 c\u1eadp \u0111\u1ebfn v\u1ea5n \u0111\u1ec1 S\u1ee5t \u00e1p linh ki\u1ec7n M\u1eafc n\u1ed1i ti\u1ebfp so v\u1edbi M\u1eafc song song. B\u00e0i vi\u1ebft n\u00e0y gi\u1eef m\u1ed1i quan t\u00e2m \u0111\u00f3 trong b\u1ed1i c\u1ea3nh k\u1ef9 thu\u1eadt c\u00f4ng nghi\u1ec7p v\u00e0 mua s\u1eafm. Gi\u1eef cho c\u00e1c \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n r\u00f5 r\u00e0ng v\u00e0 duy tr\u00ec xuy\u00ean su\u1ed1t m\u1ecdi ph\u00e9p t\u00ednh. S\u1eed d\u1ee5ng c\u00e1c gi\u00e1 tr\u1ecb m\u00f4 t\u1ea3 c\u00f9ng m\u1ed9t \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh, ph\u00e2n bi\u1ec7t \u0111\u1ea1i l\u01b0\u1ee3ng danh \u0111\u1ecbnh v\u1edbi \u0111\u1ea1i l\u01b0\u1ee3ng \u0111o \u0111\u1ea1c v\u00e0 tr\u00e1nh nh\u1ea7m l\u1eabn gi\u1eefa \u0111i\u1ec7n \u00e1p d\u00e2y-v\u00e2y v\u1edbi \u0111i\u1ec7n \u00e1p d\u00e2y-trung t\u00ednh. M\u1ed9t k\u1ebft qu\u1ea3 ch\u1ec9 \u0111\u00e1ng tin c\u1eady khi c\u00e1c \u0111\u1ea7u v\u00e0o c\u1ee7a n\u00f3 \u0111\u00e1ng tin c\u1eady; dung sai, nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 m\u00e9o d\u1ea1ng s\u00f3ng v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a thi\u1ebft b\u1ecb \u0111o c\u00f3 th\u1ec3 l\u00e0m thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 k\u1ebft qu\u1ea3 so s\u00e1nh.<\/p><p>\u0110\u1ed1i v\u1edbi c\u00e1ch t\u00ednh \u0111\u1ed9 s\u1ee5t \u00e1p tr\u00ean m\u1ed9t \u0111i\u1ec7n tr\u1edf, m\u1ee5c \u0111\u00edch th\u1ef1c t\u1ebf c\u1ee7a b\u01b0\u1edbc n\u00e0y nh\u1eb1m ph\u1ee5c v\u1ee5 k\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm hi\u1ec7n t\u1ea1i c\u1ee7a U.S. li\u00ean t\u1ee5c gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 s\u1ee5t \u00e1p tr\u00ean linh ki\u1ec7n n\u1ed1i ti\u1ebfp v\u00e0 song song. B\u00e0i vi\u1ebft n\u00e0y gi\u1eef m\u1ed1i quan t\u00e2m \u0111\u00f3 trong b\u1ed1i c\u1ea3nh k\u1ef9 thu\u1eadt c\u00f4ng nghi\u1ec7p v\u00e0 mua s\u1eafm. H\u00e3y s\u1eed d\u1ee5ng \u0111\u1ed3ng th\u1eddi c\u00e1c b\u1ea3n v\u1ebd d\u1ef1 \u00e1n, b\u1ea3ng th\u00f4ng s\u1ed1 (nameplate), h\u01b0\u1edbng d\u1eabn c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ti\u00eau chu\u1ea9n qu\u1ea3n l\u00fd; kh\u00f4ng c\u00f3 m\u1ed9t gi\u00e1 tr\u1ecb catalogue \u0111\u01a1n l\u1ebb n\u00e0o m\u00f4 t\u1ea3 to\u00e0n b\u1ed9 ch\u1ebf \u0111\u1ed9 l\u00e0m vi\u1ec7c. Tr\u01b0\u1eddng h\u1ee3p th\u00f4ng tin xung \u0111\u1ed9t, h\u00e3y d\u1eebng l\u1ea1i v\u00e0 gi\u1ea3i quy\u1ebft s\u1ef1 kh\u00e1c bi\u1ec7t tr\u01b0\u1edbc khi thay \u0111\u1ed5i c\u00e0i \u0111\u1eb7t, d\u00e2y d\u1eabn ho\u1eb7c thi\u1ebft b\u1ecb. Vi\u1ec7c xem x\u00e9t c\u00f3 k\u1ef7 lu\u1eadt s\u1ebd t\u00e1ch bi\u1ec7t c\u00e1c s\u1ef1 ki\u1ec7n \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh kh\u1ecfi c\u00e1c gi\u1ea3 \u0111\u1ecbnh. \u0110\u00e1nh d\u1ea5u t\u1eebng th\u00f4ng tin \u0111\u1ea7u v\u00e0o l\u00e0 \u0111\u00e3 \u0111o \u0111\u1ea1c, \u0111\u00e3 t\u00ednh to\u00e1n, \u0111\u00e3 ch\u1ec9 \u0111\u1ecbnh ho\u1eb7c v\u1eabn ch\u01b0a r\u00f5. Sau \u0111\u00f3, x\u00e1c \u0111\u1ecbnh ti\u00eau chu\u1ea9n nghi\u1ec7m thu v\u00e0 th\u1ea9m quy\u1ec1n ph\u00ea duy\u1ec7t. B\u01b0\u1edbc n\u00e0y t\u1ea1o ra m\u1ed9t h\u1ed3 s\u01a1 h\u1eefu \u00edch cho vi\u1ec7c mua s\u1eafm, ch\u1ea1y th\u1eed v\u00e0 b\u1ea3o tr\u00ec sau n\u00e0y, \u0111\u1ed3ng th\u1eddi ng\u0103n ch\u1eb7n vi\u1ec7c quy\u1ebft \u0111\u1ecbnh t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng mang t\u00ednh t\u1ea1m th\u1eddi bi\u1ebfn th\u00e0nh c\u1ea5u h\u00ecnh v\u0129nh vi\u1ec5n kh\u00f4ng c\u00f3 t\u00e0i li\u1ec7u ghi nh\u1eadn.<\/p>\n\n<h2>V\u00ed d\u1ee5 v\u1ec1 m\u1ea1ch n\u1ed1i ti\u1ebfp \u0111\u00e3 gi\u1ea3i<\/h2><p>K\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm hi\u1ec7n t\u1ea1i c\u1ee7a Hoa K\u1ef3 li\u00ean t\u1ee5c \u0111\u1ec1 c\u1eadp \u0111\u1ebfn v\u1ea5n \u0111\u1ec1 S\u1ee5t \u00e1p theo kho\u1ea3ng c\u00e1ch. B\u00e0i vi\u1ebft n\u00e0y gi\u1eef m\u1ed1i quan t\u00e2m \u0111\u00f3 trong b\u1ed1i c\u1ea3nh k\u1ef9 thu\u1eadt c\u00f4ng nghi\u1ec7p v\u00e0 mua s\u1eafm. M\u1ed9t ph\u00e9p t\u00ednh l\u00e0 s\u1ef1 ki\u1ec3m tra, kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 cho ph\u00e9p l\u00e0m vi\u1ec7c tr\u00ean thi\u1ebft b\u1ecb \u0111ang c\u00f3 \u0111i\u1ec7n. C\u00e1c ph\u00e9p \u0111o y\u00eau c\u1ea7u m\u1ed9t thi\u1ebft b\u1ecb c\u00f3 \u0111\u1ecbnh m\u1ee9c ph\u00f9 h\u1ee3p, c\u00e1c d\u00e2y d\u1eabn ch\u00ednh x\u00e1c, thi\u1ebft l\u1eadp \u0111\u01b0\u1ee3c x\u00e1c minh v\u00e0 quy tr\u00ecnh an to\u00e0n \u0111i\u1ec7n c\u1ee7a c\u00f4ng ty. Khi thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u00e1ch ly, h\u00e3y x\u00e1c minh kh\u00f4ng c\u00f3 \u0111i\u1ec7n v\u00e0 ki\u1ec3m so\u00e1t n\u0103ng l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n \u0111o \u0111i\u1ec7n tr\u1edf ho\u1eb7c t\u00ednh li\u00ean t\u1ee5c.<\/p><p>\u0110\u1ec3 t\u00ednh \u0111\u1ed9 s\u1ee5t \u00e1p tr\u00ean m\u1ed9t \u0111i\u1ec7n tr\u1edf, m\u1ee5c \u0111\u00edch th\u1ef1c t\u1ebf c\u1ee7a b\u01b0\u1edbc n\u00e0y l\u00e0 hi\u1ec7n t\u1ea1i c\u00e1c k\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm \u1edf Hoa K\u1ef3 li\u00ean t\u1ee5c \u0111\u1ec1 c\u1eadp \u0111\u1ebfn \u0111\u1ed9 s\u1ee5t \u00e1p theo kho\u1ea3ng c\u00e1ch. B\u00e0i vi\u1ebft n\u00e0y gi\u1eef m\u1ed1i quan t\u00e2m \u0111\u00f3 trong b\u1ed1i c\u1ea3nh k\u1ef9 thu\u1eadt c\u00f4ng nghi\u1ec7p v\u00e0 mua s\u1eafm. S\u1eed d\u1ee5ng \u0111\u1ed3ng th\u1eddi c\u00e1c b\u1ea3n v\u1ebd d\u1ef1 \u00e1n, nh\u00e3n m\u00e1c thi\u1ebft b\u1ecb, h\u01b0\u1edbng d\u1eabn c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ti\u00eau chu\u1ea9n qu\u1ea3n l\u00fd; kh\u00f4ng c\u00f3 gi\u00e1 tr\u1ecb ca-ta-l\u00f4 \u0111\u01a1n l\u1ebb n\u00e0o m\u00f4 t\u1ea3 to\u00e0n b\u1ed9 c\u00f4ng su\u1ea5t. Khi th\u00f4ng tin m\u00e2u thu\u1eabn, h\u00e3y d\u1eebng l\u1ea1i v\u00e0 gi\u1ea3i quy\u1ebft s\u1ef1 kh\u00e1c bi\u1ec7t tr\u01b0\u1edbc khi thay \u0111\u1ed5i c\u00e0i \u0111\u1eb7t, d\u00e2y d\u1eabn ho\u1eb7c thi\u1ebft b\u1ecb. M\u1ed9t qu\u00e1 tr\u00ecnh \u0111\u00e1nh gi\u00e1 c\u00f3 k\u1ef7 lu\u1eadt gi\u00fap t\u00e1ch bi\u1ec7t c\u00e1c s\u1ef1 th\u1eadt \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh kh\u1ecfi c\u00e1c gi\u1ea3 \u0111\u1ecbnh. \u0110\u00e1nh d\u1ea5u t\u1eebng th\u00f4ng tin \u0111\u1ea7u v\u00e0o l\u00e0 \u0111\u01b0\u1ee3c \u0111o \u0111\u1ea1c, \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n, \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh ho\u1eb7c v\u1eabn ch\u01b0a r\u00f5. Sau \u0111\u00f3, x\u00e1c \u0111\u1ecbnh ti\u00eau ch\u00ed ch\u1ea5p thu\u1eadn v\u00e0 ng\u01b0\u1eddi c\u00f3 th\u1ea9m quy\u1ec1n ph\u00ea duy\u1ec7t. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra m\u1ed9t h\u1ed3 s\u01a1 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c cho vi\u1ec7c mua s\u1eafm, ch\u1ea1y th\u1eed v\u00e0 b\u1ea3o tr\u00ec sau n\u00e0y, \u0111\u1ed3ng th\u1eddi ng\u0103n ch\u1eb7n m\u1ed9t quy\u1ebft \u0111\u1ecbnh t\u1ea1m th\u1eddi t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng tr\u1edf th\u00e0nh m\u1ed9t c\u1ea5u h\u00ecnh v\u0129nh vi\u1ec5n kh\u00f4ng c\u00f3 t\u00e0i li\u1ec7u.<\/p>\n\n<h2>S\u1ee5t \u00e1p m\u1ea1ch song song<\/h2><p>K\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm hi\u1ec7n t\u1ea1i \u1edf Hoa K\u1ef3 li\u00ean t\u1ee5c \u0111\u1ec1 c\u1eadp \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng s\u1ee5t \u00e1p DC. B\u00e0i vi\u1ebft n\u00e0y \u0111\u1eb7t m\u1ed1i quan t\u00e2m \u0111\u00f3 trong b\u1ed1i c\u1ea3nh k\u1ef9 thu\u1eadt c\u00f4ng nghi\u1ec7p v\u00e0 mua s\u1eafm. Ghi l\u1ea1i c\u00f4ng th\u1ee9c, gi\u00e1 tr\u1ecb ngu\u1ed3n, \u0111\u01a1n v\u1ecb, c\u00e1c gi\u1ea3 \u0111\u1ecbnh v\u00e0 k\u1ebft qu\u1ea3. \u0110\u1ed1i v\u1edbi c\u00e1c quy\u1ebft \u0111\u1ecbnh c\u1ee7a d\u1ef1 \u00e1n, h\u00e3y so s\u00e1nh k\u1ebft qu\u1ea3 t\u00ednh to\u00e1n v\u1edbi \u0111\u1ecbnh m\u1ee9c thi\u1ebft b\u1ecb, gi\u1edbi h\u1ea1n d\u00e2y d\u1eabn, c\u00e0i \u0111\u1eb7t b\u1ea3o v\u1ec7 v\u00e0 ti\u00eau chu\u1ea9n qu\u1ea3n l\u00fd. Vi\u1ec7c \u0111\u00e1nh gi\u00e1 \u0111\u1ed9c l\u1eadp l\u00e0 th\u00edch h\u1ee3p khi k\u1ebft qu\u1ea3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn thi\u1ebft b\u1ecb n\u0103ng l\u01b0\u1ee3ng cao, an to\u00e0n c\u00f4ng c\u1ed9ng ho\u1eb7c t\u00ednh li\u00ean t\u1ee5c c\u1ee7a d\u1ecbch v\u1ee5 quan tr\u1ecdng.<\/p><p>\u0110\u1ec3 t\u00ednh \u0111\u1ed9 s\u1ee5t \u00e1p tr\u00ean m\u1ed9t \u0111i\u1ec7n tr\u1edf, m\u1ee5c \u0111\u00edch th\u1ef1c t\u1ebf c\u1ee7a b\u01b0\u1edbc n\u00e0y l\u00e0 \u0111\u1ec3 d\u00f2ng k\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm \u1edf Hoa K\u1ef3 li\u00ean t\u1ee5c gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 s\u1ee5t \u00e1p m\u1ed9t chi\u1ec1u. B\u00e0i vi\u1ebft n\u00e0y gi\u1eef m\u1ed1i quan t\u00e2m \u0111\u00f3 trong b\u1ed1i c\u1ea3nh k\u1ef9 thu\u1eadt c\u00f4ng nghi\u1ec7p v\u00e0 mua s\u1eafm. S\u1eed d\u1ee5ng \u0111\u1ed3ng th\u1eddi c\u00e1c b\u1ea3n v\u1ebd d\u1ef1 \u00e1n, nh\u00e3n thi\u1ebft b\u1ecb, h\u01b0\u1edbng d\u1eabn c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ti\u00eau chu\u1ea9n chi ph\u1ed1i; kh\u00f4ng c\u00f3 m\u1ed9t gi\u00e1 tr\u1ecb danh m\u1ee5c \u0111\u01a1n l\u1ebb n\u00e0o m\u00f4 t\u1ea3 to\u00e0n b\u1ed9 ch\u1ebf \u0111\u1ed9 l\u00e0m vi\u1ec7c. Tr\u01b0\u1eddng h\u1ee3p th\u00f4ng tin xung \u0111\u1ed9t, h\u00e3y d\u1eebng l\u1ea1i v\u00e0 gi\u1ea3i quy\u1ebft s\u1ef1 kh\u00e1c bi\u1ec7t tr\u01b0\u1edbc khi thay \u0111\u1ed5i c\u00e0i \u0111\u1eb7t, d\u00e2y d\u1eabn ho\u1eb7c thi\u1ebft b\u1ecb. Qu\u00e1 tr\u00ecnh xem x\u00e9t c\u00f3 k\u1ef7 lu\u1eadt gi\u00fap t\u00e1ch bi\u1ec7t c\u00e1c s\u1ef1 th\u1eadt \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh kh\u1ecfi c\u00e1c gi\u1ea3 \u0111\u1ecbnh. \u0110\u00e1nh d\u1ea5u t\u1eebng th\u00f4ng tin \u0111\u1ea7u v\u00e0o l\u00e0 \u0111\u01b0\u1ee3c \u0111o l\u01b0\u1eddng, \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n, \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh ho\u1eb7c v\u1eabn ch\u01b0a r\u00f5. Sau \u0111\u00f3, x\u00e1c \u0111\u1ecbnh ti\u00eau ch\u00ed ch\u1ea5p nh\u1eadn v\u00e0 ai c\u00f3 th\u1ea9m quy\u1ec1n ph\u00ea duy\u1ec7t. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra m\u1ed9t h\u1ed3 s\u01a1 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng cho vi\u1ec7c mua s\u1eafm, ch\u1ea1y th\u1eed v\u00e0 b\u1ea3o tr\u00ec sau n\u00e0y, \u0111\u1ed3ng th\u1eddi ng\u0103n ch\u1eb7n m\u1ed9t quy\u1ebft \u0111\u1ecbnh t\u1ea1m th\u1eddi t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng bi\u1ebfn th\u00e0nh c\u1ea5u h\u00ecnh v\u0129nh vi\u1ec5n kh\u00f4ng c\u00f3 t\u00e0i li\u1ec7u.<\/p>\n\n<figure class=\"wp-block-image size-full lbaji-product-image\"><img decoding=\"async\" src=\"https:\/\/lbajiele.com\/wp-content\/uploads\/2026\/09\/how-do-you-calculate-voltage-drop-across-a-resistor-body-023.png\" alt=\"LBAJI product equipment illustrating how do you calculate voltage drop across a resistor\" loading=\"lazy\"\/><figcaption>H\u00ecnh \u1ea3nh d\u1ef1a tr\u00ean s\u1ea3n ph\u1ea9m LBAJI v\u1ec1 c\u00e1ch t\u00ednh \u0111i\u1ec7n \u00e1p gi\u1ea3m qua m\u1ed9t \u0111i\u1ec7n tr\u1edf; c\u1ea5u h\u00ecnh cu\u1ed1i c\u00f9ng s\u1ebd kh\u00e1c nhau t\u00f9y theo d\u1ef1 \u00e1n.<\/figcaption><\/figure>\n\n<h2>Ki\u1ec3m tra c\u00f4ng su\u1ea5t s\u1eed d\u1ee5ng P = V \u00d7 I<\/h2><p>K\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm hi\u1ec7n t\u1ea1i c\u1ee7a Hoa K\u1ef3 li\u00ean t\u1ee5c \u0111\u1ec1 c\u1eadp \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng s\u1ee5t \u00e1p \u0111i\u1ec7n xoay chi\u1ec1u (AC Voltage Drop). B\u00e0i vi\u1ebft n\u00e0y gi\u1eef m\u1ed1i quan t\u00e2m \u0111\u00f3 trong b\u1ed1i c\u1ea3nh k\u1ef9 thu\u1eadt c\u00f4ng nghi\u1ec7p v\u00e0 mua s\u1eafm. H\u00e3y b\u1eaft \u0111\u1ea7u b\u1eb1ng c\u00e1ch x\u00e1c \u0111\u1ecbnh b\u1ed1i c\u1ea3nh chi ph\u1ed1i. C\u00e1c thu\u1eadt ng\u1eef \u0111i\u1ec7n c\u00f3 th\u1ec3 c\u00f3 c\u00e1c gi\u1edbi h\u1ea1n kh\u00e1c nhau trong ng\u00e0nh \u0111i\u1ec7n t\u1eed, h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n t\u00f2a nh\u00e0, h\u1ec7 th\u1ed1ng c\u00f4ng nghi\u1ec7p v\u00e0 l\u01b0\u1edbi \u0111i\u1ec7n ph\u00e2n ph\u1ed1i. N\u00eau r\u00f5 d\u1ea1ng s\u00f3ng, \u0111i\u1ec7n \u00e1p danh \u0111\u1ecbnh, c\u00e1ch b\u1ed1 tr\u00ed pha, \u0111i\u1ec3m tham chi\u1ebfu v\u00e0 quy chu\u1ea9n ho\u1eb7c ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng tr\u01b0\u1edbc khi chuy\u1ec3n m\u1ed9t l\u1eddi gi\u1ea3i th\u00edch chung th\u00e0nh m\u1ed9t quy\u1ebft \u0111\u1ecbnh thi\u1ebft k\u1ebf.<\/p><p>V\u1ec1 c\u00e1ch t\u00ednh s\u1ee5t \u00e1p tr\u00ean m\u1ed9t \u0111i\u1ec7n tr\u1edf, m\u1ee5c \u0111\u00edch th\u1ef1c ti\u1ec5n c\u1ee7a b\u01b0\u1edbc n\u00e0y l\u00e0: c\u00e1c k\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm hi\u1ec7n nay t\u1ea1i Hoa K\u1ef3 th\u01b0\u1eddng \u0111\u1ec1 c\u1eadp \u0111\u1ebfn s\u1ee5t \u00e1p xoay chi\u1ec1u. B\u00e0i vi\u1ebft n\u00e0y xem x\u00e9t v\u1ea5n \u0111\u1ec1 \u0111\u00f3 trong b\u1ed1i c\u1ea3nh k\u1ef9 thu\u1eadt c\u00f4ng nghi\u1ec7p v\u00e0 mua s\u1eafm. S\u1eed d\u1ee5ng k\u1ebft h\u1ee3p b\u1ea3n v\u1ebd d\u1ef1 \u00e1n, nh\u00e3n hi\u1ec7u, h\u01b0\u1edbng d\u1eabn c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng; kh\u00f4ng c\u00f3 gi\u00e1 tr\u1ecb n\u00e0o trong danh m\u1ee5c c\u00f3 th\u1ec3 m\u00f4 t\u1ea3 to\u00e0n b\u1ed9 nhi\u1ec7m v\u1ee5. Khi th\u00f4ng tin m\u00e2u thu\u1eabn, h\u00e3y d\u1eebng l\u1ea1i v\u00e0 gi\u1ea3i quy\u1ebft s\u1ef1 kh\u00e1c bi\u1ec7t tr\u01b0\u1edbc khi thay \u0111\u1ed5i c\u00e0i \u0111\u1eb7t, d\u00e2y d\u1eabn ho\u1eb7c thi\u1ebft b\u1ecb. Vi\u1ec7c r\u00e0 so\u00e1t c\u00f3 k\u1ef7 lu\u1eadt s\u1ebd ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c s\u1ef1 th\u1eadt \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh v\u1edbi c\u00e1c gi\u1ea3 \u0111\u1ecbnh. \u0110\u00e1nh d\u1ea5u t\u1eebng \u0111\u1ea7u v\u00e0o l\u00e0 \u201c\u0111\u00e3 \u0111o\u201d, \u201c\u0111\u00e3 t\u00ednh to\u00e1n\u201d, \u201c\u0111\u00e3 quy \u0111\u1ecbnh\u201d ho\u1eb7c \u201cv\u1eabn ch\u01b0a bi\u1ebft\u201d. Sau \u0111\u00f3, x\u00e1c \u0111\u1ecbnh ti\u00eau ch\u00ed ch\u1ea5p nh\u1eadn v\u00e0 ng\u01b0\u1eddi c\u00f3 th\u1ea9m quy\u1ec1n ph\u00ea duy\u1ec7t. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra m\u1ed9t h\u1ed3 s\u01a1 h\u1eefu \u00edch cho vi\u1ec7c mua s\u1eafm, v\u1eadn h\u00e0nh th\u1eed v\u00e0 b\u1ea3o tr\u00ec sau n\u00e0y, \u0111\u1ed3ng th\u1eddi ng\u0103n ch\u1eb7n vi\u1ec7c m\u1ed9t quy\u1ebft \u0111\u1ecbnh t\u1ea1m th\u1eddi t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng tr\u1edf th\u00e0nh c\u1ea5u h\u00ecnh v\u0129nh vi\u1ec5n kh\u00f4ng \u0111\u01b0\u1ee3c ghi ch\u00e9p.<\/p>\n\n<h2>Sai s\u1ed1 dung sai, nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111o l\u01b0\u1eddng<\/h2><p>K\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm hi\u1ec7n t\u1ea1i \u1edf Hoa K\u1ef3 li\u00ean t\u1ee5c \u0111\u1ec1 c\u1eadp \u0111\u1ebfn v\u1ea5n \u0111\u1ec1 s\u1ee5t \u00e1p d\u00e2y d\u1eabn. B\u00e0i vi\u1ebft n\u00e0y gi\u1eef m\u1ed1i quan t\u00e2m \u0111\u00f3 trong b\u1ed1i c\u1ea3nh k\u1ef9 thu\u1eadt c\u00f4ng nghi\u1ec7p v\u00e0 mua s\u1eafm. Gi\u1eef c\u00e1c \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng r\u00f5 r\u00e0ng v\u00e0 duy tr\u00ec ch\u00fang xuy\u00ean su\u1ed1t m\u1ecdi ph\u00e9p t\u00ednh. S\u1eed d\u1ee5ng c\u00e1c gi\u00e1 tr\u1ecb m\u00f4 t\u1ea3 c\u00f9ng m\u1ed9t \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh, ph\u00e2n bi\u1ec7t \u0111\u1ea1i l\u01b0\u1ee3ng danh \u0111\u1ecbnh v\u1edbi \u0111\u1ea1i l\u01b0\u1ee3ng \u0111o \u0111\u1ea1c v\u00e0 tr\u00e1nh nh\u1ea7m l\u1eabn gi\u1eefa \u0111i\u1ec7n \u00e1p d\u00e2y-v\u00e2y-d\u00e2y (line-to-line) v\u1edbi \u0111i\u1ec7n \u00e1p d\u00e2y-v\u1edbi-trung-t\u00ednh (line-to-neutral). M\u1ed9t k\u1ebft qu\u1ea3 ch\u1ec9 \u0111\u00e1ng tin c\u1eady khi c\u00e1c \u0111\u1ea7u v\u00e0o c\u1ee7a n\u00f3 \u0111\u00e1ng tin c\u1eady; dung sai, nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 m\u00e9o d\u1ea1ng s\u00f3ng v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a thi\u1ebft b\u1ecb \u0111o c\u00f3 th\u1ec3 thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 k\u1ebft qu\u1ea3 so s\u00e1nh.<\/p><p>\u0110\u1ed1i v\u1edbi c\u00e1ch t\u00ednh \u0111\u1ed9 s\u1ee5t \u00e1p tr\u00ean m\u1ed9t \u0111i\u1ec7n tr\u1edf, m\u1ee5c \u0111\u00edch th\u1ef1c t\u1ebf c\u1ee7a b\u01b0\u1edbc n\u00e0y l\u00e0 v\u00ec k\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm hi\u1ec7n t\u1ea1i \u1edf Hoa K\u1ef3 li\u00ean t\u1ee5c \u0111\u1ec1 c\u1eadp \u0111\u1ebfn \u0111\u1ed9 s\u1ee5t \u00e1p c\u1ee7a d\u00e2y d\u1eabn. B\u00e0i vi\u1ebft n\u00e0y gi\u1eef m\u1ed1i quan t\u00e2m \u0111\u00f3 trong b\u1ed1i c\u1ea3nh k\u1ef9 thu\u1eadt c\u00f4ng nghi\u1ec7p v\u00e0 mua s\u1eafm. S\u1eed d\u1ee5ng \u0111\u1ed3ng th\u1eddi c\u00e1c b\u1ea3n v\u1ebd d\u1ef1 \u00e1n, nh\u00e3n thi\u1ebft b\u1ecb, h\u01b0\u1edbng d\u1eabn c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ti\u00eau chu\u1ea9n qu\u1ea3n l\u00fd; kh\u00f4ng c\u00f3 m\u1ed9t gi\u00e1 tr\u1ecb catalog \u0111\u01a1n l\u1ebb n\u00e0o m\u00f4 t\u1ea3 to\u00e0n b\u1ed9 ch\u1ebf \u0111\u1ed9 l\u00e0m vi\u1ec7c. Khi th\u00f4ng tin m\u00e2u thu\u1eabn, h\u00e3y d\u1eebng l\u1ea1i v\u00e0 gi\u1ea3i quy\u1ebft s\u1ef1 kh\u00e1c bi\u1ec7t tr\u01b0\u1edbc khi thay \u0111\u1ed5i c\u00e0i \u0111\u1eb7t, d\u00e2y d\u1eabn ho\u1eb7c thi\u1ebft b\u1ecb. M\u1ed9t qu\u00e1 tr\u00ecnh xem x\u00e9t k\u1ef7 lu\u1eadt gi\u00fap t\u00e1ch bi\u1ec7t c\u00e1c s\u1ef1 th\u1eadt \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh kh\u1ecfi c\u00e1c gi\u1ea3 \u0111\u1ecbnh. \u0110\u00e1nh d\u1ea5u t\u1eebng th\u00f4ng tin \u0111\u1ea7u v\u00e0o l\u00e0 \u0111\u00e3 \u0111o \u0111\u1ea1c, \u0111\u00e3 t\u00ednh to\u00e1n, \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh ho\u1eb7c v\u1eabn ch\u01b0a bi\u1ebft. Sau \u0111\u00f3, x\u00e1c \u0111\u1ecbnh ti\u00eau ch\u00ed ch\u1ea5p nh\u1eadn v\u00e0 ng\u01b0\u1eddi c\u00f3 th\u1ea9m quy\u1ec1n ph\u00ea duy\u1ec7t. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra m\u1ed9t h\u1ed3 s\u01a1 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng cho vi\u1ec7c mua s\u1eafm, ch\u1ea1y th\u1eed v\u00e0 b\u1ea3o tr\u00ec sau n\u00e0y, \u0111\u1ed3ng th\u1eddi ng\u0103n ch\u1eb7n m\u1ed9t quy\u1ebft \u0111\u1ecbnh t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng mang t\u00ednh t\u1ea1m th\u1eddi bi\u1ebfn th\u00e0nh c\u1ea5u h\u00ecnh v\u0129nh vi\u1ec5n kh\u00f4ng c\u00f3 t\u00e0i li\u1ec7u ghi nh\u1eadn.<\/p>\n\n<h2>T\u1ea1i sao s\u1ee5t \u00e1p trong h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n l\u1ea1i l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 kh\u00e1c bi\u1ec7t<\/h2><p>K\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm hi\u1ec7n t\u1ea1i \u1edf Hoa K\u1ef3 li\u00ean t\u1ee5c \u0111\u1ec1 c\u1eadp \u0111\u1ebfn M\u00e1y t\u00ednh s\u1ee5t \u00e1p. B\u00e0i vi\u1ebft n\u00e0y gi\u1eef m\u1ed1i quan t\u00e2m \u0111\u00f3 trong b\u1ed1i c\u1ea3nh k\u1ef9 thu\u1eadt c\u00f4ng nghi\u1ec7p v\u00e0 thu mua. Vi\u1ec7c t\u00ednh to\u00e1n l\u00e0 m\u1ed9t b\u01b0\u1edbc ki\u1ec3m tra, kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 cho ph\u00e9p l\u00e0m vi\u1ec7c tr\u00ean thi\u1ebft b\u1ecb \u0111ang c\u00f3 \u0111i\u1ec7n. C\u00e1c ph\u00e9p \u0111o y\u00eau c\u1ea7u d\u1ee5ng c\u1ee5 \u0111o \u0111\u1ea1t chu\u1ea9n th\u00edch h\u1ee3p, d\u00e2y d\u1eabn ch\u00ednh x\u00e1c, thi\u1ebft l\u1eadp \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh v\u00e0 quy tr\u00ecnh an to\u00e0n \u0111i\u1ec7n c\u1ee7a t\u1ea1i ch\u1ed7. Khi thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u00f4 l\u1eadp, h\u00e3y x\u00e1c minh kh\u00f4ng c\u00f3 \u0111i\u1ec7n v\u00e0 ki\u1ec3m so\u00e1t n\u0103ng l\u01b0\u1ee3ng t\u1ed3n \u0111\u1ecdng tr\u01b0\u1edbc khi ti\u1ebfn h\u00e0nh \u0111o \u0111i\u1ec7n tr\u1edf ho\u1eb7c t\u00ednh li\u00ean t\u1ee5c.<\/p><p>\u0110\u1ed1i v\u1edbi c\u00e1ch t\u00ednh \u0111\u1ed9 s\u1ee5t \u00e1p tr\u00ean m\u1ed9t \u0111i\u1ec7n tr\u1edf, m\u1ee5c \u0111\u00edch th\u1ef1c t\u1ebf c\u1ee7a b\u01b0\u1edbc n\u00e0y l\u00e0 \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c k\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm hi\u1ec7n t\u1ea1i c\u1ee7a Hoa K\u1ef3 li\u00ean t\u1ee5c \u0111\u1ec1 c\u1eadp \u0111\u1ebfn m\u00e1y t\u00ednh \u0111\u1ed9 s\u1ee5t \u00e1p. B\u00e0i vi\u1ebft n\u00e0y gi\u1eef m\u1ed1i quan t\u00e2m \u0111\u00f3 trong b\u1ed1i c\u1ea3nh k\u1ef9 thu\u1eadt c\u00f4ng nghi\u1ec7p v\u00e0 mua s\u1eafm. S\u1eed d\u1ee5ng b\u1ea3n v\u1ebd d\u1ef1 \u00e1n, nh\u00e3n th\u00f4ng s\u1ed1, h\u01b0\u1edbng d\u1eabn c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ti\u00eau chu\u1ea9n qu\u1ea3n l\u00fd c\u00f9ng nhau; kh\u00f4ng c\u00f3 gi\u00e1 tr\u1ecb catalog \u0111\u01a1n l\u1ebb n\u00e0o m\u00f4 t\u1ea3 to\u00e0n b\u1ed9 nhi\u1ec7m v\u1ee5. Khi th\u00f4ng tin xung \u0111\u1ed9t, h\u00e3y d\u1eebng l\u1ea1i v\u00e0 gi\u1ea3i quy\u1ebft s\u1ef1 kh\u00e1c bi\u1ec7t tr\u01b0\u1edbc khi thay \u0111\u1ed5i c\u00e0i \u0111\u1eb7t, d\u00e2y d\u1eabn ho\u1eb7c thi\u1ebft b\u1ecb. M\u1ed9t \u0111\u00e1nh gi\u00e1 k\u1ef7 lu\u1eadt ph\u00e2n t\u00e1ch c\u00e1c s\u1ef1 th\u1eadt \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh kh\u1ecfi c\u00e1c gi\u1ea3 \u0111\u1ecbnh. \u0110\u00e1nh d\u1ea5u t\u1eebng \u0111\u1ea7u v\u00e0o l\u00e0 \u0111\u00e3 \u0111o, \u0111\u00e3 t\u00ednh to\u00e1n, \u0111\u00e3 ch\u1ec9 \u0111\u1ecbnh ho\u1eb7c v\u1eabn ch\u01b0a bi\u1ebft. Sau \u0111\u00f3 x\u00e1c \u0111\u1ecbnh ti\u00eau ch\u00ed ch\u1ea5p nh\u1eadn v\u00e0 ai c\u00f3 th\u1ea9m quy\u1ec1n ph\u00ea duy\u1ec7t. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra m\u1ed9t h\u1ed3 s\u01a1 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng cho vi\u1ec7c mua s\u1eafm, v\u1eadn h\u00e0nh th\u1eed v\u00e0 b\u1ea3o tr\u00ec sau n\u00e0y, \u0111\u1ed3ng th\u1eddi ng\u0103n ch\u1eb7n quy\u1ebft \u0111\u1ecbnh hi\u1ec7n tr\u01b0\u1eddng t\u1ea1m th\u1eddi tr\u1edf th\u00e0nh m\u1ed9t c\u1ea5u h\u00ecnh v\u0129nh vi\u1ec5n kh\u00f4ng c\u00f3 t\u00e0i li\u1ec7u.<\/p>\n\n<h2>Quy tr\u00ecnh t\u00ednh to\u00e1n v\u00e0 \u0111o \u0111\u1ea1c th\u1ef1c t\u1ebf<\/h2><p>K\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm hi\u1ec7n t\u1ea1i \u1edf Hoa K\u1ef3 li\u00ean t\u1ee5c \u0111\u1ec1 c\u1eadp \u0111\u1ebfn Vi\u1ec7c \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 s\u1ee5t \u00e1p tr\u00ean m\u1ed9t \u0111i\u1ec7n tr\u1edf, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0110\u1ecbnh lu\u1eadt Ohm. \u0110\u1ecbnh lu\u1eadt Ohm ph\u00e1t bi\u1ec3u r\u1eb1ng \u0111\u1ed9 s\u1ee5t \u00e1p (V) tr\u00ean m\u1ed9t \u0111i\u1ec7n tr\u1edf b\u1eb1ng d\u00f2ng \u0111i\u1ec7n (I) ch\u1ea1y qua \u0111i\u1ec7n tr\u1edf nh\u00e2n v\u1edbi \u0111i\u1ec7n tr\u1edf su\u1ea5t (R) c\u1ee7a \u0111i\u1ec7n tr\u1edf \u0111\u00f3. Do \u0111\u00f3, theo thu\u1eadt ng\u1eef to\u00e1n h\u1ecdc, \u0110\u1ecbnh lu\u1eadt Ohm c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n l\u00e0: \u0110\u1ecbnh lu\u1eadt Ohm. B\u00e0i vi\u1ebft n\u00e0y gi\u1eef m\u1ed1i quan t\u00e2m \u0111\u00f3 trong b\u1ed1i c\u1ea3nh k\u1ef9 thu\u1eadt c\u00f4ng nghi\u1ec7p v\u00e0 mua s\u1eafm. Ghi l\u1ea1i c\u00f4ng th\u1ee9c, gi\u00e1 tr\u1ecb ngu\u1ed3n, \u0111\u01a1n v\u1ecb, c\u00e1c gi\u1ea3 \u0111\u1ecbnh v\u00e0 k\u1ebft qu\u1ea3. \u0110\u1ed1i v\u1edbi c\u00e1c quy\u1ebft \u0111\u1ecbnh c\u1ee7a d\u1ef1 \u00e1n, h\u00e3y so s\u00e1nh k\u1ebft qu\u1ea3 t\u00ednh to\u00e1n v\u1edbi \u0111\u1ecbnh m\u1ee9c thi\u1ebft b\u1ecb, gi\u1edbi h\u1ea1n d\u00e2y d\u1eabn, c\u00e0i \u0111\u1eb7t b\u1ea3o v\u1ec7 v\u00e0 ti\u00eau chu\u1ea9n chi ph\u1ed1i. Vi\u1ec7c \u0111\u00e1nh gi\u00e1 \u0111\u1ed9c l\u1eadp l\u00e0 ph\u00f9 h\u1ee3p khi k\u1ebft qu\u1ea3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn thi\u1ebft b\u1ecb n\u0103ng l\u01b0\u1ee3ng cao, an to\u00e0n c\u00f4ng c\u1ed9ng ho\u1eb7c t\u00ednh li\u00ean t\u1ee5c c\u1ee7a d\u1ecbch v\u1ee5 quan tr\u1ecdng.<\/p><p>\u0110\u1ed1i v\u1edbi vi\u1ec7c c\u00e1ch t\u00ednh \u0111\u1ed9 s\u1ee5t \u00e1p tr\u00ean \u0111i\u1ec7n tr\u1edf, m\u1ee5c \u0111\u00edch th\u1ef1c t\u1ebf c\u1ee7a b\u01b0\u1edbc n\u00e0y l\u00e0 \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c k\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm \u1edf Hoa K\u1ef3 nh\u1eb1m x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 s\u1ee5t \u00e1p tr\u00ean \u0111i\u1ec7n tr\u1edf, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u1ecbnh lu\u1eadt Ohm. \u0110\u1ecbnh lu\u1eadt Ohm n\u00eau r\u1eb1ng \u0111\u1ed9 s\u1ee5t \u00e1p (V) tr\u00ean m\u1ed9t \u0111i\u1ec7n tr\u1edf b\u1eb1ng d\u00f2ng \u0111i\u1ec7n (I) ch\u1ea1y qua \u0111i\u1ec7n tr\u1edf nh\u00e2n v\u1edbi \u0111i\u1ec7n tr\u1edf su\u1ea5t (R) c\u1ee7a \u0111i\u1ec7n tr\u1edf \u0111\u00f3. Do \u0111\u00f3, theo thu\u1eadt ng\u1eef to\u00e1n h\u1ecdc, \u0111\u1ecbnh lu\u1eadt Ohm c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb l\u00e0: \u0111\u1ecbnh lu\u1eadt Ohm. B\u00e0i vi\u1ebft n\u00e0y gi\u1eef m\u1ed1i quan t\u00e2m \u0111\u00f3 trong b\u1ed1i c\u1ea3nh k\u1ef9 thu\u1eadt c\u00f4ng nghi\u1ec7p v\u00e0 mua s\u1eafm. S\u1eed d\u1ee5ng c\u00e1c b\u1ea3n v\u1ebd d\u1ef1 \u00e1n, nh\u00e3n th\u00f4ng s\u1ed1, h\u01b0\u1edbng d\u1eabn c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ti\u00eau chu\u1ea9n qu\u1ea3n l\u00fd c\u00f9ng nhau; kh\u00f4ng c\u00f3 gi\u00e1 tr\u1ecb catalog \u0111\u01a1n l\u1ebb n\u00e0o m\u00f4 t\u1ea3 to\u00e0n b\u1ed9 ch\u1ebf \u0111\u1ed9 l\u00e0m vi\u1ec7c. Khi th\u00f4ng tin xung \u0111\u1ed9t, h\u00e3y d\u1eebng l\u1ea1i v\u00e0 gi\u1ea3i quy\u1ebft s\u1ef1 kh\u00e1c bi\u1ec7t tr\u01b0\u1edbc khi thay \u0111\u1ed5i c\u00e0i \u0111\u1eb7t, d\u00e2y d\u1eabn ho\u1eb7c thi\u1ebft b\u1ecb. M\u1ed9t quy tr\u00ecnh \u0111\u00e1nh gi\u00e1 nghi\u00eam ng\u1eb7t s\u1ebd t\u00e1ch bi\u1ec7t c\u00e1c s\u1ef1 ki\u1ec7n \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh kh\u1ecfi c\u00e1c gi\u1ea3 \u0111\u1ecbnh. \u0110\u00e1nh d\u1ea5u m\u1ed7i \u0111\u1ea7u v\u00e0o l\u00e0 \u0111\u00e3 \u0111o, \u0111\u00e3 t\u00ednh to\u00e1n, \u0111\u00e3 ch\u1ec9 \u0111\u1ecbnh ho\u1eb7c v\u1eabn ch\u01b0a r\u00f5 r\u00e0ng. Sau \u0111\u00f3, x\u00e1c \u0111\u1ecbnh ti\u00eau ch\u00ed ch\u1ea5p nh\u1eadn v\u00e0 ai c\u00f3 th\u1ea9m quy\u1ec1n ph\u00ea duy\u1ec7t. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra m\u1ed9t h\u1ed3 s\u01a1 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng cho vi\u1ec7c mua s\u1eafm, ch\u1ea1y th\u1eed v\u00e0 b\u1ea3o tr\u00ec sau n\u00e0y, \u0111\u1ed3ng th\u1eddi ng\u0103n ch\u1eb7n m\u1ed9t quy\u1ebft \u0111\u1ecbnh hi\u1ec7n tr\u01b0\u1eddng t\u1ea1m th\u1eddi tr\u1edf th\u00e0nh m\u1ed9t c\u1ea5u h\u00ecnh v\u0129nh vi\u1ec5n kh\u00f4ng \u0111\u01b0\u1ee3c ghi nh\u1eadn.<\/p>\n\n<h2>B\u1ea3ng \u0111\u00e1nh gi\u00e1 k\u1ef9 thu\u1eadt<\/h2><div style=\"overflow-x:auto\"><table><thead><tr><th>Xem l\u1ea1i m\u1eb7t h\u00e0ng<\/th><th>C\u1ea7n x\u00e1c minh nh\u1eefng g\u00ec<\/th><th>Quy t\u1eafc quy\u1ebft \u0111\u1ecbnh<\/th><\/tr><\/thead><tbody><tr><td>Gi\u00e1 tr\u1ecb \u0111\u00e3 bi\u1ebft<\/td><td>Ngu\u1ed3n, \u0111\u01a1n v\u1ecb v\u00e0 \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh<\/td><td>Kh\u00f4ng tr\u1ed9n l\u1eabn d\u1eef li\u1ec7u danh \u0111\u1ecbnh v\u00e0 d\u1eef li\u1ec7u \u0111o l\u01b0\u1eddng<\/td><\/tr><tr><td>M\u1ed1i quan h\u1ec7<\/td><td>C\u00f4ng th\u1ee9c ho\u1eb7c \u0111\u1ecbnh ngh\u0129a chu\u1ea9n<\/td><td>N\u00eau c\u00e1c gi\u1ea3 \u0111\u1ecbnh v\u00e0 \u0111i\u1ec3m tham chi\u1ebfu<\/td><\/tr><tr><td>Ph\u00e9p t\u00ednh<\/td><td>Thay th\u1ebf k\u00e8m \u0111\u01a1n v\u1ecb<\/td><td>Duy tr\u00ec \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u1ea7y \u0111\u1ee7 cho \u0111\u1ebfn k\u1ebft qu\u1ea3 cu\u1ed1i c\u00f9ng<\/td><\/tr><tr><td>X\u00e1c minh<\/td><td>Ph\u01b0\u01a1ng ph\u00e1p ho\u1eb7c ph\u00e9p \u0111o \u0111\u1ed9c l\u1eadp<\/td><td>S\u1eed d\u1ee5ng d\u1ee5ng c\u1ee5 ph\u00f9 h\u1ee3p v\u00e0 quy tr\u00ecnh an to\u00e0n<\/td><\/tr><tr><td>Quy\u1ebft \u0111\u1ecbnh<\/td><td>So s\u00e1nh v\u1edbi y\u00eau c\u1ea7u v\u1ec1 thi\u1ebft b\u1ecb ho\u1eb7c m\u00e3 ngu\u1ed3n<\/td><td>Ch\u1ec9 ri\u00eang vi\u1ec7c t\u00ednh to\u00e1n th\u00ec ch\u01b0a th\u1ec3 ph\u00ea duy\u1ec7t vi\u1ec7c l\u1eafp \u0111\u1eb7t<\/td><\/tr><\/tbody><\/table><\/div><p>B\u1ea3ng n\u00e0y l\u00e0 m\u1ed9t t\u00e0i li\u1ec7u h\u1ed7 tr\u1ee3 \u0111\u00e1nh gi\u00e1 \u0111\u1ecbnh t\u00ednh. X\u1ebfp h\u1ea1ng d\u1ef1 \u00e1n, gi\u1edbi h\u1ea1n v\u00e0 gi\u00e1 tr\u1ecb nghi\u1ec7m thu ph\u1ea3i l\u1ea5y t\u1eeb thi\u1ebft k\u1ebf \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t, ti\u00eau chu\u1ea9n hi\u1ec7n h\u00e0nh v\u00e0 t\u00e0i li\u1ec7u thi\u1ebft b\u1ecb.<\/p>\n\n<h2>Thi\u1ebft b\u1ecb v\u00e0 h\u01b0\u1edbng d\u1eabn LBAJI li\u00ean quan<\/h2><p>\u0110\u1ed1i v\u1edbi ng\u1eef c\u1ea3nh s\u1ea3n ph\u1ea9m, \u0111\u00e1nh gi\u00e1 <a href=\"https:\/\/lbajiele.com\/vi\/san-pham\/kyn28a-12-metal-clad-withdrawable-ac-switchgear\/\">T\u1ee7 \u0111i\u1ec7n b\u1ecdc kim lo\u1ea1i b\u1ecdc gi\u00e1p KYN28A-12<\/a>. \u0110\u00f3 l\u00e0 m\u1ed9t v\u00ed d\u1ee5 v\u1ec1 m\u1ed9t t\u1ed5 h\u1ee3p \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf k\u1ef9 thu\u1eadt, kh\u00f4ng ph\u1ea3i l\u00e0 tuy\u00ean b\u1ed1 r\u1eb1ng m\u1ed9t m\u00f4 h\u00ecnh ph\u00f9 h\u1ee3p cho m\u1ecdi \u1ee9ng d\u1ee5ng.<\/p><ul><li><a href=\"https:\/\/lbajiele.com\/vi\/blog\/3-phase-transformer-calculations-calculator-and-formula-guide\/\">t\u00ednh to\u00e1n m\u00e1y bi\u1ebfn \u00e1p ba pha<\/a><\/li><li><a href=\"https:\/\/lbajiele.com\/vi\/blog\/amps-convert-to-kva-calculator-and-formula-guide\/\">C\u00e1ch t\u00ednh am-pe ra kVA<\/a><\/li><li><a href=\"https:\/\/lbajiele.com\/vi\/blog\/34-5kv-switchgear-guide\/\">\u1ee8ng d\u1ee5ng thi\u1ebft b\u1ecb \u0111\u00f3ng c\u1eaft 34.5 kV<\/a><\/li><\/ul>\n\n<div class=\"lbaji-video\"><h2>Video gi\u00e1o d\u1ee5c<\/h2><p>Video gi\u00e1o d\u1ee5c \u0111\u1ed9c l\u1eadp n\u00e0y t\u1eeb Wisc-Online (m\u1ed9t ph\u1ea7n c\u1ee7a WisTech Open) cung c\u1ea5p n\u1ec1n t\u1ea3ng tr\u1ef1c quan cho ch\u1ee7 \u0111\u1ec1 n\u00e0y. N\u00f3 kh\u00f4ng thay th\u1ebf cho c\u00e1c b\u1ea3n v\u1ebd d\u1ef1 \u00e1n, quy tr\u00ecnh an to\u00e0n ho\u1eb7c \u0111\u00e1nh gi\u00e1 k\u1ef9 thu\u1eadt.<\/p><div style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden\"><iframe src=\"https:\/\/www.youtube-nocookie.com\/embed\/Iii_0RcUHyA\" title=\"S\u1ee5t \u00e1p trong m\u1ea1ch n\u1ed1i ti\u1ebfp\" loading=\"lazy\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0\" allow=\"accelerometer; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/div><p><a href=\"https:\/\/www.youtube.com\/watch?v=Iii_0RcUHyA\" target=\"_blank\" rel=\"noopener nofollow\">Xem S\u1ee5t \u00e1p trong m\u1ea1ch n\u1ed1i ti\u1ebfp tr\u00ean YouTube<\/a>.<\/p><\/div>\n\n<figure class=\"wp-block-image size-full lbaji-product-image\"><img decoding=\"async\" src=\"https:\/\/lbajiele.com\/wp-content\/uploads\/2026\/09\/how-do-you-calculate-voltage-drop-across-a-resistor-body-024.png\" alt=\"LBAJI product equipment illustrating how do you calculate voltage drop across a resistor\" loading=\"lazy\"\/><figcaption>H\u00ecnh \u1ea3nh d\u1ef1a tr\u00ean s\u1ea3n ph\u1ea9m LBAJI v\u1ec1 c\u00e1ch t\u00ednh \u0111i\u1ec7n \u00e1p gi\u1ea3m qua m\u1ed9t \u0111i\u1ec7n tr\u1edf; c\u1ea5u h\u00ecnh cu\u1ed1i c\u00f9ng s\u1ebd kh\u00e1c nhau t\u00f9y theo d\u1ef1 \u00e1n.<\/figcaption><\/figure>\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list\">\n<\/div>\n<\/div>\n\n<section class=\"lbaji-technical-references\"><h2>T\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt<\/h2><ul><li><a href=\"https:\/\/openstax.org\/books\/physics\/pages\/19-1-ohms-law\" target=\"_blank\" rel=\"noopener nofollow\">V\u1eadt l\u00fd OpenStax: \u0110\u1ecbnh lu\u1eadt Ohm<\/a><\/li><li><a href=\"https:\/\/www.nist.gov\/pml\/owm\/si-units-electric-current\" target=\"_blank\" rel=\"noopener nofollow\">\u0110\u01a1n v\u1ecb SI c\u1ee7a NIST: C\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng \u0111i\u1ec7n<\/a><\/li><li><a href=\"https:\/\/www.osha.gov\/electrical\" target=\"_blank\" rel=\"noopener nofollow\">An to\u00e0n \u0111i\u1ec7n OSHA<\/a><\/li><\/ul><\/section>\n\n<h2>K\u1ebft lu\u1eadn<\/h2><p>T\u00ednh \u0111\u1ed9 s\u1ee5t \u00e1p tr\u00ean m\u1ed9t \u0111i\u1ec7n tr\u1edf b\u1eb1ng \u0111\u1ecbnh lu\u1eadt Ohm: V = I \u00d7 R. S\u1eed d\u1ee5ng \u0111\u01a1n v\u1ecb v\u00f4n cho V, ampe cho I v\u00e0 \u00f4m cho R. Trong m\u1ea1ch n\u1ed1i ti\u1ebfp, \u0111\u1ed9 s\u1ee5t \u00e1p c\u1ee7a m\u1ed7i \u0111i\u1ec7n tr\u1edf t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi \u0111i\u1ec7n tr\u1edf c\u1ee7a n\u00f3; trong m\u1ea1ch song song, m\u1ed7i nh\u00e1nh th\u00f4ng th\u01b0\u1eddng c\u00f3 c\u00f9ng m\u1ed9t \u0111i\u1ec7n \u00e1p \u0111\u1eb7t v\u00e0o. \u0110\u1ed1i v\u1edbi m\u1ed9t d\u1ef1 \u00e1n th\u1ef1c t\u1ebf, h\u00e3y cung c\u1ea5p s\u01a1 \u0111\u1ed3 m\u1ed9t s\u1ee3i, \u0111\u1ecbnh m\u1ee9c h\u1ec7 th\u1ed1ng, d\u1eef li\u1ec7u t\u1ea3i ho\u1eb7c b\u1ea3o v\u1ec7, m\u00f4i tr\u01b0\u1eddng v\u00e0 c\u00e1c th\u1eed nghi\u1ec7m b\u1eaft bu\u1ed9c \u0111\u1ec3 thi\u1ebft b\u1ecb v\u00e0 ph\u01b0\u01a1ng ph\u00e1p thi c\u00f4ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ki\u1ec3m tra tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n.<\/p>","protected":false},"excerpt":{"rendered":"<p>T\u00ednh \u0111\u1ed9 s\u1ee5t \u00e1p tr\u00ean m\u1ed9t \u0111i\u1ec7n tr\u1edf b\u1eb1ng \u0111\u1ecbnh lu\u1eadt \u00d4m: V = I \u00d7 R. D\u00f9ng \u0111\u01a1n v\u1ecb v\u00f4n cho V, ampe cho I v\u00e0 \u00f4m cho R. Trong m\u1ea1ch n\u1ed1i ti\u1ebfp, \u0111\u1ed9 s\u1ee5t \u00e1p c\u1ee7a m\u1ed7i \u0111i\u1ec7n tr\u1edf t\u1ec9 l\u1ec7 thu\u1eadn v\u1edbi \u0111i\u1ec7n tr\u1edf c\u1ee7a n\u00f3; trong m\u1ea1ch song song, m\u1ed7i nh\u00e1nh\u2026<\/p>","protected":false},"author":6,"featured_media":3297,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[58],"tags":[84,83,75],"class_list":["post-3233","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-electrical-engineering-guides","tag-electrical-calculations","tag-power-distribution","tag-switchgear"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/lbajiele.com\/vi\/wp-json\/wp\/v2\/posts\/3233","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lbajiele.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lbajiele.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lbajiele.com\/vi\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/lbajiele.com\/vi\/wp-json\/wp\/v2\/comments?post=3233"}],"version-history":[{"count":2,"href":"https:\/\/lbajiele.com\/vi\/wp-json\/wp\/v2\/posts\/3233\/revisions"}],"predecessor-version":[{"id":3301,"href":"https:\/\/lbajiele.com\/vi\/wp-json\/wp\/v2\/posts\/3233\/revisions\/3301"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lbajiele.com\/vi\/wp-json\/wp\/v2\/media\/3297"}],"wp:attachment":[{"href":"https:\/\/lbajiele.com\/vi\/wp-json\/wp\/v2\/media?parent=3233"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lbajiele.com\/vi\/wp-json\/wp\/v2\/categories?post=3233"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lbajiele.com\/vi\/wp-json\/wp\/v2\/tags?post=3233"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}